the night.alan,thankyou.presidentobamapickedup the phone today, hoping to prevent an all-out war. nancy cordes is at the white house for us tonight. nancy. >> reporter: scott, both the president and the vice president have now spoken to israeli prime minister netanyahu, and bespite some tensions between these leaders recently, we're told the two men expressed their support for israel's right to defend itself while also urging him to try to limit civilian casualties. white house officials told us today the onus is on hamas and not on israel to try to deescalate this conflict. they say they've reached out to other allies in the region, like turkey, asking them to pass that message along to hamas as well. in fact, secretary of state clinton, we're told, reached out to egypt's foreign minister today, asking him to deliver that message personally when he visits gaza tomorrow, scott. >> pelley: nancy, thank you very much. today, a congressional investigation had a look at video recorded by security cameras the night of the attack on the u.s. consulate in benghazi, libya. as you kno